The first examples of triply bonded dirhenium(II) complexes that contain beta-diketonate ligands

摘要

The reaction of Re_2Cl_4(mu-dppm)_2 (dppm=Ph_2PCH_2PPh_2) with Tl(acac) affords the bis-acetylacetonate complex Re_2Cl_2(acac)_2(mu-dppm)_2 (1) via the intermediacy of Re_2(mu-O)(O)_2Cl_4 (mu-dppm)_2 and Re_2(mu-O)_2Cl_4 (mu-dppm)_2 (3). The single crystal X-ray structures of 1-3 have been determined; the Re-Re distances (in A) are 2.2968(3), 2.2542(5) and 3.1415(7), respectively.